TFA ELECTRONICS LLC – Independent Seller, Not an Authorized Agent
Description:
The 53C700-66 is a high-performance Fast SCSI controller IC from Symbios Logic, designed for SCSI-2 compliant systems. It integrates advanced bus mastering and DMA capabilities to enable efficient, high-speed data transfer while minimizing CPU load.
Specifications:
Manufacturer: Symbios Logic
Part Number: 53C700-66
Type: SCSI Controller IC
SCSI Standard: Fast SCSI (SCSI-2)
Maximum Transfer Rate: up to 10 MB/s
Clock Frequency: 66 MHz
Interface: Host Bus with DMA support
Technology: CMOS
Package: PQFP
Pin Count: 160 Pins
Mounting Type: Surface Mount
Features:
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SCSI-2 (Fast SCSI) compliant
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Integrated DMA controller (bus mastering)
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Reduces CPU overhead during data transfer
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Supports high-speed data communication
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Reliable performance for legacy and industrial systems
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Designed for storage and embedded applications
Pin Functions (Overview):
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SCSI Bus Signals: DB0–DB7, parity, control lines (REQ, ACK, ATN, SEL, BSY, RST, MSG, C/D, I/O)
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Host Interface: Address/Data bus, Read/Write, Chip Select
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DMA Interface: Bus request/grant signals
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Interrupt Output: IRQ for system communication
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Clock Input: System timing reference
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Power Pins: VCC and GND
Applications:
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SCSI hard disk and tape controllers
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Industrial computers and embedded systems
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Legacy servers and workstations
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Storage interface solutions
Package: PQFP-160 (160-pin Quad Flat Package)
Condition: New / from bulk or original stock (see photos)
